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Fittoniya [83]
2 years ago
10

Evaluate each numerical expression. 3^4 - (-4)^2

Mathematics
1 answer:
Mama L [17]2 years ago
5 0

Answer:

<u>65.</u>

Step-by-step explanation:

1. Write the expression.

3^{4} -(-4)^{2}

2. Expand the expression.

3x3x3x3 -[(-4)x(-4)]

3. Simplify.

81 -[16]\\\\65.

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A circle has a circumference of 34 54 cm. What is the area of the circle to the nearest whole centimeter? Use 3.14
inysia [295]

Answer:

<h2>9498.5 m</h2>

Step-by-step explanation:

We know that the Circumference = 3454 cm

And we also know that the formula for the Circumference of Circle is,

2\pi \times r

So we can put the equation this way,

3454 = 2\pi \times r

So we can solve for 'r'

3454 = 2 \times 3.14 \times r \\ 3454 = 6.28r \\ r   =   \frac{3454}{6.28}  \\ r = 550

Now we have radius and we can solve for the area of the circle,

\pi \times  {r}^{2}

3.14 \times 550 \times 550  \\  = 949850

We can convert this to meter,

9498.5 m

I am not sure if this is correct just let me know thanks :)

8 0
3 years ago
Find the volume of each figure. Round your answers to the nearest tenth, if necessary.​
Helga [31]

Answer:

201.1 km^3

Step-by-step explanation:

The volume of a cylinder is V=πr2h. In this problem, our radius is 8, and our heigh is 4. Plugging in our values we get:

V=π(8)(2)(4)=64π, which is approximately 201.1.

Hope this helped,

~cloud

5 0
3 years ago
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Which of these equations best describes the line of best fit for the data in the scatter plot on the number of metals the U.S. O
Fed [463]

Answer:

B

Step-by-step explanation:

It's not going negative you can tell by the line it has y-intercept and the last on didn't the other ones have aa negative. If you have a problem with these kinds of equations just do process of elimination and you'll be fine also here's the answer to another question

4 0
4 years ago
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Alex787 [66]

Answer:

111.375

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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